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AO at Mauna Kea GLAO is missing. GLAO feasibility study has been performed by Gemini in Key components for GLAO. Deformable secondary mirror. Multiple LGSs and tomographic wavefront estimation. Which telescope is the best for GLAO? Subaru, Keck or Gemini.

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Summary Future plan of AOS at southern hemisphere is well covered. (MCAO, GLAO, LTAO etc.) No future plan of GLAO (wide field AO) at Mauna Kea, even though Mauna Kea is the best site to compensate the GL turbulence. Deformable secondary mirror is the major component. IRM2+MOIRCS, Prime focus AO.